Grinding machine



Feb. 27, 1923. L4464 L. J. COONEY GRINDING MACHINE Filed Aug. 51, 1921 5sheets-sheet 1 M%@M7 irm Feb. 27, 1923.

L. J. COONEY 'GRINDING MACHINE Filed Aug. 51, 1921 3 sheets-sheet; 2

Felb. 27, 1923.

L. J. COONEY GRINDING MACHINE Filed Aug. 51; 1921 3 sheets-sheet 5LAi/VEENCE (9'.

GRINDER AND Application filed August 31,

To all. 007mm if may coowcm: 2 is a side elevation. hi9; 3 is a ver- Beit known that in LN \TCE ticai l line ill-lll oi F152. 2,

3 sect on on t ie I 8 and 9 are detail views, i loein iv iv Oi a citizenof the li nited dent of l ittshui'gh in the county 0' a s ction on theline gheny' am State or eiiiisylvenia F g Fig 2; section on the line VIVa new and useful intention in Grimlih oi Fig. 2, and Fig. 9 a sectiontln'oiigl the chines of which the following; is e.- speciii-ceeiid o"the chisel on the line EL-EX of tion. 7 F 8 The ini' cntion lzites togrinding nie- Referring; to the drawings. 1 is the gi iinder chines, eiipeifticul 1 Wheel, 2 is he casing of the machine in for QlllMllP f whichmounted the usual gearing for tors i the wheel, 3 is the handle foropermoiinted up 1 i o 2' ing and 4: is the rail cutter or tion with he:1 heavy Ci1i1- -1 is mounted in the clamping acting in somewhat; the wayas sleeve 5 in position so that its cutting edge chisels. The cutting wls formed may be ground on the periphery oi: the on & ur' e aid T ehandle is prefei'ahl x made inhevel first on one siee on the other.These eiit toioie bee composi (hying;

h the eccentric eisc 6 by means of mine or carriage of theattachoceilleted during; the grinding 0pizindle is mounted on the and1-10 in place by the nut 8; Be-

it; t cessed so as to receive the eccentric disc is pensive theeeveiiti'ic collar 9 the rear side or? the e'nt lllYC i1 is the promcollei? being provided with the plate 10,

' l), to ho cl the parts in assembled pee; which xvi Work ceir'er issupported fi'oin the pidit and ship 2 9:" the maci ine, by means of thending We the pe lT- t l1 and whose shank exiidii 52; Wheeh so that thereeh s mm the soche; 12.011 the cashigiv heing ti "nib screw 1 he el duethe use H in phi-1e 16 u iiah is el ll is provided at its outer end withhe two 21 PRU oi ems 1 izmd l5. (Fig: 5 in connecseine i'n in which tionwith Figs 1 and 2) UQOllWlllCll is slid to 501m t 1e cui ably id forlateral ad ustment the hlovlz i/ oeing' accomg i'iiiding progresses hmeans 7 hi'eaded through t 1e block 16, plished as the the screw in-cloperatin forth.

..1\ ex to provide :11 more V0 is perforated to recei v integral Withthe hiecl s the eiampi' g sleeve for the tool 4 21s iei'eiiiet'tei 111i.w The hlocl: i6 18 also provided s 1th the p111 and upon this pin is chine with pivoted 1:1; by imyens of the pivot pin 2 integral with sendnot. The eccentric collar 9 1s eULlDtQiFlXli'dil to receive the end or?the connecting rol 29, such rod being held in the collar bv t 1e thumbscrew (Fig. 1). The rod 2i ;tends through the casing 26 being provid rintermediate its ems with the eitlargreinent 3i, held yieldinglyzigeinst longi- L 'udinzil inm'einent by means oi the s 'n'ings 32 and33.

The bl'll'iifiell 22 is rocked buck and hirth on the arm. 3% integralwith the bracket and carrying a pi; 35 provided will-1 roller :56 at itsouter end ei'igeging the slot 25 in the upper end of the arm. 24s Thistll'l'illlg provides for the oscillziti 11 of the b 22 in :1 ve 'ticalplane around the 21 (1S an axis so that in the cow oscillation theentire are-e or the tool to be ground is presented to the per. oi" thegrinding wheel.

It is also desirlile that during;- the grinding operation the tool shellbe moved back a: d forth in a horizontel plane so to cor the surfacebeing ground from one side of the peri'pl'iery oi the grinding: wheel tothe other so that the wear is distributed over such eriphery. This isaccomplished by loving the pivot rod 2i (Fig; 3;} heel; and forth in thedirection of the :EXis of such pivot rod. This is provided for by thediagonal slot 20 (Fig; 'l') which rcceires the roller head 37 of e piewhich is screwed into the pivot rod 21. As the bracket 22 is oscillatedand the pin 21 rotated about its axis,

i; is caused to reciprocate longitudinall giving; the desired hack andit. h movement of the bracket end tool in :1 horizontal direclion, thuscarrying the cdgi'e ol the tool across the periphe Hi surface or thegrindius: wheel.

The sleeve 5 which. carries the tool (Fig. is held between the ll-slmpedpart 39 'inl'cgr rzl \il'h the bracket and the bar 2.8 by the bolls willthe sle wc being provided with :4, pnir oi lugs -i-i 3) which (it i-nijocorrespondlug recesses in the feces o? the port 39 and bar 38 so that thsleeve 'zin rock latelailly in such purl ll) l hisroclilnggHIUYGEilQl'lh is used to secure lhe 'OllVQFZ. surfaces on the tool endes oposcd to the usual plane surinccs groun ipon a tool oi this kind. f;pair of coil .1 rinejs 63, shown iii dotted lines in hie. 3 and in fulllines in Figs. lend 7. are located in recesses in the inner i'r'zice ofthe br ick ,t 22 opposite the sleeve so that the ends of the sprii bearagainst the sleeve and tend Q VJ hen the grinding u see ted the lengages the tool alone; the line we. 1*. t st such time the springs (33are under compression. iii" the gri'indi prie r sud the meta 59 is cutaway, the springs cause the sleere 5 to lugs 41, so that erred over thesuij rives at the point (30, ment is stopped at this point 1):; means ofthe thumb screw 62 1) carried by the lug 61 on the sleeve 5 whose end isset to engage the side oi the bar 38. The cur eture of the surface 58 issecured in this way and corresponds to the are erounijl which the tool srings Wi h the l time a center. Tihunib screws 42 xtend th 'ongh thesleeve and bars and engage the is es oi the qing; more tool The tool isheld clamped and cen tcred primarily by the dew tedmw;

tion in Fig, i and comprin,

plate 43, the threaded sleeve thunib screw 45. in chi-n1 plate is firstmoved inward thus centerii (1' the tool hetweez the i faces 46, eaterwhi throne screwed down, thus reino holding the tool in position clinedsurfaces e6, whici soon become scorer and worn, thus their accuracy.

During the 'inding operation, adjustment of the tool toward the wheel isrequired to compensate fo tie cuttmg sway screw e5 is n he strain orrein the inof tl e metal 211 d this is nccomplis nesns oi the screw 17.i is led (his. in e our 11 sect of the pins 14- ond 15 so moves thelJlOCl'f 16 in and out o the end 15. A stop screw 4;? pro 1 a lock outd8 adapted to or the block 16 serves to limft such block.

in order to litirther steady the rod 4:9 l and 2} cs. l oi which issupported on the drive shaft '4" while the tends through the his weirdlyfrom the bread-escrew 51 being: employer.

e the rod,

The position oi the tool loniriiiu 'lzi its sleeve is fixed h teens-i o?t; e 4 mounted on the rod wh ch rod is so i its inner end i on the 'lhcston 59 is pr net the hid the lint sesu ed in position by the thumbscrew fir er this adjustment the collar 56 is positioned against thestop and secured by ineens of ti e thumb screw 57. After one edge oil eLeo" is grounch the stop is removed to perini" "he reverse] 0*? posit onis nesnec up against pins 7 d with e the side of the movement 01:

the bracket 11; is prm'idcd one thehoss 'ound end ex- .1" or tool thetool the collar 50 .361 so that when the stop and in the plane oi"rotation thereof, and

(52) mounted tor reciprocation longitudiaally oi said axis to carry theedge of the ibute the wear over such my, and means or g1 ing the carrsmovements during the rindin ion in a grinding machine, l or disc, aholder for a bevelled adapted to ol inclined towa d the wheel s cal eshe bevelled in opo the periphery oi? the wheel, a tor the holder,pivotally supui axis parallel to the axis of re- 1": toe wheel so thetilting of the carriage CflI'ilGS the edge of the cutter along theperiphery the wheel on an arc tangent thereto in the plane of rotationthereof, and (2) mounted :-:or rcciirccation longitudinally of said axisto carry tliz oi. the cutter tra sversely of the periphery oi. the wheeland distribute the wear over such pc- 1 ohery, means for rocking thecarriage, and menus actur ed by said rocking movement ror reciprocatingthe carria e. 1 In combination in riding machine a grinding wheel ordisc, a holder for a chisel or cutter to he bevelled, adapted to supportthe tool inclined toward the wheel with one of its edges to lo oevellcdin opposition to the periphery of the wheel, a, cam." tor the holder.pivotally sup orted on an axis parallel to the axis oi. ro- 5 tation oilthe wheel, so that the tilting ol the cari'age moves the edge of thecuter along the periphery-cit the heel on an arc tangent thereto in theplane of rotation thereof, and (2) mounted for reciprocation on saidaxis to carry the edge of the cutter transversely oi? the periphei oithe wheel, means 'i or rocking he carr ;c, and cam. means z-oopcrat iththe axle tor moving it and the carriage longitudinally when such ca. riage is rocked.

in combii'iatiou in a grinding machine, a griirdin5);- "l eel or dc, aholder for a chisel or cutter to be l support the tool inclined towardthe wheel with one of its edges to be bevelled in oprinding wh V orcutter to he iort the m elled adapted to position to the periphery ofthe wheel, a carriagefor the holder, pivotally supported on an axisparallel to the axis of rotation of the Wheel, so that the tilting ofthe carriage moves the edge of the cutter along the periphery of thewheel on anarc tangent thereto in the plane of rotation thereof, and (2)mounted for reciprocation 011 said axis to carry the edge of the cuttertransversely of the periphery of the Wheel, a

yielding connecting rod for rocking the carriage when the wheel isoperated, and cam means co-operating with the axis for moving it and thecarriage longitudinally when the carriage is rocked.

9. In combination in a grinding machine, a grinding wheel or disc, aholder for a chisel'or cutter to be bevelled adapted. to support thetool inclined toward the wheel with one of its edges to be bevelled inopposition to the periphery of the wheel, a supporting bracket, acarriage for the holder pivotally supported on the bracket on an axisparallel to the axis of rotation of the wheel so that the tilting of thecarriage moves the edge of the cutter along the periphery or" the wheelon an arc tangent thereto, and mounted for reciprocation longitudinallyof said axis, means for rocking the carriage from the actuation of thegrinding wheel including a yielding connecting ele ment, means wherebythe carriage may be adjusted on said bracket transversely of said axis,and means actuated by said rocking movement for reciprocating thecarriage. 10. In combination in a grinding machine, grinding wheel ordisc, a holder for a chisel or cutter to he bevelled-adapted to supportthe tool inclined toward the wheel with one of its edges to be bevelledin opposition to the periphery of the wheel, a supporting bracket, acarriage for. the holder pivot-ally supported on the bracket on an axisparallel to the axis of rotation of the wheel, and mounted forreciprocation longitudinally of said axis, in 7 ans lor rocking thecarriage automatically including a yielding .conneeting element, meansfor adjusting the carriage on the bracket transversely of said axis, andcam means for co-operating with the axle for moving the carriagelongitudinally of the axle when such carriage is rocked.

11. In combination in a grinding machine,

(2) mounted for reciprocation longitudinelly of said axis to carry theedge of the cutter transversely of the periphery of the wheel anddistribute the Wear over such pe riphery, and means for giving thecarriage its movement during the grinding operation the holder beingpivotally supported on the carriage on an axis at right angles to thefirst axis whereby the holder and cutter may he swung on an arc towardthe axis or" the wheel as the grinding operation progresses to secure aconvex bevelled surface.

In testimony whereof, I have hereunto subscribed my name this (lay ofAug 19%.

